1、 ETSI TS 102 928 V1.1.3 (2014-09) Speech and multimedia Transmission Quality (STQ); End-to-End Transmission Planning Requirements for Real Time Services in an NGN context TECHNICAL SPECIFICATION ETSI ETSI TS 102 928 V1.1.3 (2014-09)2Reference RTS/STQ-234 Keywords planning, QoS, transmission, voice E
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4、tents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of statu
5、s. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notificati
6、on No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and t
7、he foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered f
8、or the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 928 V1.1.3 (2014-09)3Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Introduction 4g31 Scope 5g3
9、2 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 Reference Configuration 8g34.1 Generic Segment-connection Points . 9g34.2 Transport Reference Parameters and Configurations . 10g34.2.1 Referen
10、ce Configurations . 10g34.2.1.1 Backbone Configuration . 10g34.2.1.2 PSTN/ISDN classic access Configuration 11g34.2.1.3 NGN PSTN/ISDN access Configuration 11g34.2.1.4 Access DSL/Ethernet Configuration . 11g34.2.1.5 GSM Access configuration . 11g34.2.1.6 Access configuration from UMTS Release 4 12g34
11、.2.1.7 Access configuration from LTE 12g34.2.1.8 CPE reference configuration . 13g34.3 Delay Values 13g34.3.1 Backbone Delay 13g34.4 Network parameters: End-to-End Delay, Talker Echo Loudness Rating, R Value for VoIP . 15g34.4.1 Delay with regional propagation delay (1 400 km / 7 ms) 15g34.4.2 Categ
12、ories of User Satisfaction . 18g35 Guidance on Segment-connection Objectives 18g35.1 Guidance on Access Segment Objectives 19g35.2 Guidance on Total Transit Segment Objectives . 19g35.2.1 Availability . 20g35.3 Voice Terminals . 20g36 End-to-End Aspects 20g37 Transport of UDI 22g38 Synchronization o
13、f endpoints . 22g3History 24g3ETSI ETSI TS 102 928 V1.1.3 (2014-09)4Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-
14、members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursua
15、nt to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present docum
16、ent. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Speech and multimedia Transmission Quality (STQ). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “will“, “will not“, “can
17、“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction The present document provides end-to-end transmissi
18、on planning requirements for voice (from mouth to ear) and voice band data services in a context of an IP Multimedia Core Network Subsystem, and partially extracted from, TR 102 775 i.20. Focus is on details of delay introduced by network elements, jitter caused by access bandwidth limitations and o
19、n reference connection scenarios. The objectives provided are a pre-requisite for network operators to be able to provide good quality connections as perceived by the user. The present document forms part of STQs roadmap regarding Quality aspects of the IP Multimedia Core Network Subsystem. ETSI ETS
20、I TS 102 928 V1.1.3 (2014-09)51 Scope The present document provides requirements on the quality parameters that need to be considered at the Segment-connection of Voice over IP (VoIP) services, voice band data (VBD) and conversational video service services in an IP Multimedia Core Network Subsystem
21、. The present document provides requirements on objectives for voice and data parameters. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific
22、 references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at
23、 the time of publication, ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. Not applicable. 2.2 Informative references The following referenced documents are not necessary for the app
24、lication of the present document but they assist the user with regard to a particular subject area. i.1 Recommendation ITU-T Y.1540 (2002): “Internet protocol data communication service - IP packet transfer and availability performance parameters“. i.2 Recommendation ITU-T Y.1541 (2006): “Network pe
25、rformance objectives for IP-based services“. i.3 Recommendation ITU-T Y.1542 (2006): “Framework for achieving end-to-end IP performance objectives“. i.4 Recommendation ITU-T G.107 (2008): “The E-model: a computational model for use in transmission planning“. i.5 Recommendation ITU-T G.109 (1999): “D
26、efinition of categories of speech transmission quality“. i.6 ETSI ES 202 737: “Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband VoIP terminals (handset and headset) from a QoS perspective as perceived by the user“. i.7 ETSI ES 202 738: “Speech and multimedia
27、 Transmission Quality (STQ); Transmission requirements for narrowband VoIP loudspeaking and handsfree terminals from a QoS perspective as perceived by the user“. i.8 ETSI ES 202 739: “Speech and multimedia Transmission Quality (STQ); Transmission requirements for wideband VoIP terminals (handset and
28、 headset) from a QoS perspective as perceived by the user“. i.9 ETSI ES 202 740: “Speech and multimedia Transmission Quality (STQ); Transmission requirements for wideband VoIP loudspeaking and handsfree terminals from a QoS perspective as perceived by the user“. ETSI ETSI TS 102 928 V1.1.3 (2014-09)
29、6i.10 ETSI ES 282 001: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Functional Architecture“. i.11 GSMA Document IR.3445: “Inter-Service Provider IP Backbone Guidelines“. i.12 Recommendation ITU-T G.8261 (2008): “Timing and synchronization a
30、spects in packet networks“. i.13 Recommendation ITU-T G.8262 (2007): “Timing characteristics of synchronous ethernet equipment slave clock (EEC)“. i.14 Recommendation ITU-T G.8264 (2008): “Timing distribution through packet networks“. i.15 IEEE 1588: “Standard for a Precision Clock Synchronization P
31、rotocol for Networked Measurement and Control System“. i.16 Recommendation ITU-T G.711: “Pulse code modulation (PCM) of voice frequencies“. i.17 Recommendation ITU-T G.729: “Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP)“. i.18 Recommendati
32、on ITU-T I.231.1: “Circuit-mode bearer service categories: Circuit-mode 64 kbit/s unrestricted, 8 kHz structured bearer service“. i.19 Recommendation ITU-T G.826: “End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections“. i.20 ETSI TR
33、 102 775: “Speech and multimediaTransmission Quality (STQ); Guidance on objectives for Quality related Parameters at VoIP Segment-Connection Points; A support to NGN transmission planners“. i.21 Recommendation ITU-T G.813: “Timing characteristics of SDH equipment slave clocks (SEC)“. i.22 Recommenda
34、tion ITU-T G.1050 (03/11): “Network model for evaluating multimedia transmission performance over Internet Protocol“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: access segment: network segment from the customer
35、 interface (UNI) to the interface on the customer side of the first Gateway Router real time service: class of telecommunications service requiring information to be transmitted and delivered within stated limits of time delay and jitter segment-connection point: point between two segments NOTE: The
36、 terms “interconnection“ or “interconnection point“ has been used in the NGN standards, e.g. in i.14, the same terms are generally used for NNIs, not for the connection between access segment and transit segment, they might be misinterpreted. Therefore, throughout the present document, the terms “Se
37、gment-connection“ or “Segment-connection point“ are used. total transit segment: segment between Gateway routers, including the gateway routers themselves NOTE: The network segment may include interior routers having different functions. ETSI ETSI TS 102 928 V1.1.3 (2014-09)73.2 Abbreviations For th
38、e purposes of the present document, the following abbreviations apply: AGW Access GateWay AS Application Server CPE Customer Premises Equipment DSL Digital Subscriber Line DSLAM Digital Subscriber Line Access Multiplexer ESR Errored Second Ratio ETH ETHernet GSM Global System for Mobile communicatio
39、ns GSMA Global System for Mobile communications Association GW GateWay IAD Integrated Access Device Ie Equipment Impairment FactorIMS IP Multimedia Subsystem IP Internet Protocol IPDV IP packet Delay Variation IPER IP packet Error Ratio IPLR IP packet Loss Ratio IPX IP Packet eXchangeISDN Integrated
40、 Services Digital Network ITU International Telecommunication Union ITU-T ITU Telecommunication Standardization Sector MGW Media GateWay MOS Mean Opinion Score MPLS Multiprotocol Label Switching MSAN Multi Service Access Node NGN Next Generation Network NNI Network to Network Interface NTP Network T
41、ime Protocol PLC Packet Loss ConcealmentPSTN Public Switched Telephone Network PTP Precision Time Protocol QoS Quality of Service SBC Session Border Controller SIP Session Initiation Protocol SoIx Service-oriented Interconnection STM Synchronous Transfer Mode SyncE Synchronous Ethernet TE Terminal E
42、quipment TELR Talker Echo Loudness Rating UDI Unrestricted digital information UMTS Universal Mobile Telecommunications System UNI User Network Interface UNIAUser Network Interface A UNICUser Network Interface C VBD Voice Band Data VLAN Virtual Local Area Network VoIP Voice over Internet Protocol xD
43、SL x Digital Subscriber Line ETSI ETSI TS 102 928 V1.1.3 (2014-09)84 Reference Configuration Compared to networks and systems that are circuit-based, those based on IP pose distinctly different challenges for planning and achieving the end-to-end performance levels necessary to adequately support th
44、e wide array of user applications (voice, data, fax, video, etc.). The fundamental quality objectives for these applications are well understood and have not changed as perceived by the user; what has changed is the technology (and associated impairments) in the layers below these applications. The
45、very nature of IP-based routers and terminals, with their queuing methods and de-de-jitter buffers, respectively, makes realizing good end-to-end performance across multiple network operators a very major challenge for applications with stringent performance objectives. Fortunately Recommendations I
46、TU-T Y.1540 i.1 and Y.1541 i.2 together provide the parameters needed to capture the performance of IP networks, and specify a set of “network QoS“ classes with end-to-end objectives specified. It is widely accepted (i.e. beyond the ITU-T) that the network QoS classes of Recommendation ITU-T Y.1541
47、i.2 should be supported by Next Generation Networks, and thus by networks evolving into NGNs. Recommendation ITU-T Y.1542 i.3 considers various approaches toward achieving end-to-end (UNI-UNI) IP network performance objectives. The general reference configuration for the present document follows the
48、 principles shown in figure 1; the number of concatenated transit providers may vary. UNICPN CPNNNI NNITotal transit segmentUserSegment AAccessSegment AUserSegment CAccessSegment CNGNProvider ANGNProvider CNGN Provider BTransitSegmentA1TransitSegmentC1TransitSegmentB1UNIRegional MetroRegionalFigure
49、1: General Reference Configuration The end-to-end connection can be decomposed into the User segment A. UNIA(sending side). Access segment A. Segment-connection Point Ain. Total transit segment. Segment-connection Point Cout. Access segment C. UNIC(receiving side). User segment C. ETSI ETSI TS 102 928 V1.1.3 (2014-09)9The total transit segment can be further decomposed into: Transit segment A1. Segment-connection point Aout. Transit segment A2 (NNI). Segment-connection point Bin. Transit segm
